Amendment 0001 to RFP 47PF0023R0031.pdf

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: Contractor is not is required to sign this document and return copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable x

X

5P2QCB

Aneesah Muhammad, Contracting Officer

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

Amendment 0001 to RFP 47PF0023R0031 for Basement Storm & Sanitary Upgrade Project, located at the Federal Building & US Courthouse, 100 NE Monroe Street, Peoria, IL is being issued to provide – Answers to RFI questions; Incorporate Amendment 01 into solicitation to include modified drawing, and Division 26 Specification Sections, and to extend the proposal due date from April 10, 2023 to April 19, 2023, by 4:00pm (CST) / 5:00pm (EST)

See Attachments

General Services Administration 230 S. Dearborn, Room 3500 Chicago, IL. 60604

General Services Administration 230 S. Dearborn, Room 3500 Chicago, IL. 60604

RFP 47PF0023R0031

04/07/2023

03/09/2023

AMENDMENT 0001 to RFP 47PF0023R0031 for Basement Storm & Sanitary Upgrade Project, located at the Federal Building & US Courthouse, 100 NE Monroe Street, Peoria, IL is being issued to provide – Answers to RFI questions;

Incorporate Amendment 01 into solicitation to include modified drawing, and Division 26 Specification Sections.

Question 1. Location for new electrical panels for the new pumps within the mechanical room. Currently has a sump pump discharge line that runs directly through the location of the panels. This sump pump line will need to be altered per code to allow the panels to be installed in this location. I believe there was going to be an addendum to the drawings.

Answer 1. I previously sent you in a 3/30/23 email, the revised drawing P100 that addresses this question. It should be issued as an amendment.

Question 2. Existing items within storage room B60. Will we need to be responsible for relocating all these items? They are currently being stored within the work area in this room.

Answer 2. GSA will relocate items stored within the room as necessary. The contractor will be responsible for moving the existing safe within the room and protecting it as necessary during work operations.

Question 3. Could we confirm the maximum weight the freight elevator can hold ? This would be used for removal and bringing in new material/equipment/concrete.

Answer 3. The latest elevator report lists the capacity as 3500 lbs.

Question 4. I didn’t see any specifications for the generator for the project. Was hoping to find information in the electrical section of the specifications. Could you please get the project managers to provide specifications on a generator?

Answer 4. Division 26 was inadvertently left out of the combined specification e-file. I have attached the missing Division 26 Specification Sections 260512 through 264310.

Storm & Sanitary Piping Upgrades PBS Region 5 Peoria Federal Building & US Courthouse, Peoria, IL PCN: RIL11807

Amendment 01

1. Drawing P100, BASEMENT PLUMBING PLAN, dated 3/29/23 re-issued with the following revisions:

a. Added Drawing Notes 14 and 15, clarifying the relocation of existing piping to allow for new wall mounted panels. New notes clouded.

b. New Drawing Notes 14 &15 keyed on Plan in Chiller Room near Column 13- F.5. Area clouded.

2. The existing building roof warranty is being provide as “For Information Only” document to identify the roof manufacturer and installation contractor.

3. The existing safe in Basement Storage Room B-60 will need to be relocated by the contractor within the room to allow for the work to be executed. The contractor is responsible for damage caused to the safe as part of the work activities. No drawing or specification will be issued with this clarification.

Attachments:

Peoria Federal Building & US Courthouse, Peoria, IL PCN:RIL11807

ELECTRICAL POWERED EQUIPMENT 260512 - 1

PROPERTY OF THE UNITED STATES GOVERNMENT

FOR OFFICIAL USE ONLY

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SECTION 260512 – ELECTRICAL POWERED EQUIPMENT

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Special Conditions, General Requirements and Division 1 Specification Sections, apply to this Section.

1.2 DESCRIPTION

A. This section of the specifications describes the principal electrical work related to the installation, connection, and control of electrical powered equipment furnished under other divisions. Should examination of related effort indicate discrepancies or omissions, request clarification prior to bidding, performing or omitting any required work.

B. Examine Contract documents and other divisions of these specifications to ascertain the extent of powered equipment covered by the drawings and specifications and the method by which each item of equipment shall be furnished, delivered to the site, installed, and the amount of electrical work which shall be included with the powered equipment. Verify the voltage and frequency requirements of electrical equipment as it is delivered to the site. If voltage and frequency are not compatible with the building electrical system, immediately inform the Associate in writing. Particular attention is called to the following items:

1. Plumbing equipment

2. Specialized equipment

C. Definition:

1. Wiring: Contactors, conduit, enclosures, connections, labor and miscellaneous material required to supply power to powered equipment and associated controls for proper operation.

D. Motor Installation and Connections: Motors such as fans, pumps, etc., are furnished under applicable sections of specifications. Those not provided as an integral part of the mechanical equipment, shall be delivered to this contractor at the point of installation. Receive these motors, handle, store (if required), and provide power wiring, including a phasing rotation check for applicable motors. Connect each motor to a separate branch circuit, feeder and include disconnecting means except where noted. Terminate conduit to motors in final connection with Liquidtight flexible conduit. Equipment frames shall be bonded per National Electrical Code.

E. Control Devices and Wiring: Control devices (such as pressure switches, floats, electrodes, P.E.

switches, E.P. switches, relays, thermostats, etc.), prewired in packaged type equipment and/or control panels shall be provided by the appropriate contractor. Provide required interlocking control, time delay relays, control transformers, break-glass stations, remote pushbuttons required to perform functions indicated within Contract documents including requirements of local authorities.

ELECTRICAL POWERED EQUIPMENT 260512 - 2

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F. Verify motor rotation for equipment before it is turned over to other Contractors or Owner.

G. Furnishing and installation of control devices, control panels, and control wiring for Plumbing equipment shall be provided under Division 22.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Refer to other related sections of Division 22 for applicable materials. Particular attention is called to the following sections:

1. Section 262813, Fuses

PART 3 - EXECUTION

3.1 ELECTRICAL WORK FOR MECHANICAL EQUIPMENT

A. Motors and Motor Controls: Pre-wired packaged type equipment, control devices, control panels and alarm panels for Mechanical Work, shall be furnished and installed under other sections of the specifications and wired under this section of the specifications, except as otherwise noted. Control devices which have piping connections shall be installed under other sections of the specifications. Where wall space is not available, provide suitable primed and painted angle iron framework supports for mounting of starters and controls. Power wiring shall be provided to motors, starters, variable frequency drives, consoles, and each refrigeration machine, electric boilers, and auxiliaries. Perform required adjustments, wiring modifications, in conjunction with any testing and operational system start-up procedures. In general, starters, disconnects, switches and fuses shall be furnished under Division 22 and wired under this division.

B. Responsibility: Electrical work specified in Division 22 as "by the Contractor" is an obligation of this contractor, the same as if specified herein.

1. Control Wiring for Plumbing Systems: control wiring of plumbing equipment shall be under Division 26 unless noted otherwise.

END OF SECTION 260512

ELECTRICAL POWER

CONDUCTORS AND CABLES

260519 - 1

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SECTION 260519 – ELECTRICAL POWER CONDUCTORS AND CABLES

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Special Conditions, General Requirements, Division 1 Specifications, apply to this Section.

B. Related Sections:

1. Division 01 Section “Construction Waste Management and Disposal”.

1.2 DESCRIPTION

A. Provide all wires and cables in accordance with the Contract Documents for service, feeders, branch circuits, lighting, systems, egress, control wiring and telecommunications.

B. This section includes cable requirements for systems below 600 volt insulation.

C. Conductors shall be soft drawn copper having conductivity not less than 98 percent.

D. Aluminum conductors type XHWN #1AWG or greater are permitted only on service conductors or feeders to distribution equipment or panelboards otherwise indicated or directed within Contract Documents. Splicing of distribution or a feeder circuit is prohibited. Aluminum conductors for branch circuits which feeds lighting or receptacles is not allowed.

E. All wiring and cables shall be installed in raceway unless otherwise noted.

F. Conductors shall be insulated for minimum of 600 volts. Motor conductors (T-leads) controlled by variable frequency drives shall have a minimum rating of 1000 volts for voltages over 240v.

G. All conductors shall be U.L. labeled and installed in accordance to the NEC.

H. Insulation types are the type referenced in NEC.

PART 2 - PRODUCTS

2.1 600 VOLT WIRE OR LESS

A. Conductors shall be “UL” approved stranded copper with a minimum insulating rating of 600v.

B. Manufacturers:

1. Southwire Company

2. General Cable Corporation

3. American Insulated Wire Corporation

4. Approved Equal.

C. Type of conductor insulation for general use shall be as follows, subject to limitation listed:

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1. Type THW – no restrictions

2. Type THHN/THWN – restrictions as follows:

a. Do not use for conductors in/under slab.

b. Do not use in wet locations.

3. Type XHHW – no restrictions.

4. Fixture wiring shall be single conductor, 600 volt, 200˚C, Type SF-2, stranded silicone rubber insulation with overall glass braid.

a. Wiring routed within ballast trough shall be high ambient wire: single conductor, 600 volt, 125˚C minimum, Type SA stranded silicone rubber insulation with overall glass braid.

5. Fire alarm cable (where required): EC to provide all power and signal circuits for the fire alarm system. Wire and cable requirements must meet NEC and that of fire alarm system Manufacturer. Refer to Specification 28 31 00 for cable types and usage.

2.2 TYPE MC CONDUCTOR CABLE

A. MC conductor cable usage is only approved for connections to ceiling grid mounted light fixtures (from overhead powered junction boxes). MC cable shall be constructed with insulated phase(s), neutral and one full size green conductors. Branch circuit type MC cable (14-6 AWG) shall use copper conductors. All MC conductors shall be type THHN/THWN-2 600v stranded.

B. Manufacturers:

1. AFC Cable System

2. General Cable

3. Alcan Cable

4. Southwire

5. Approved equal

2.3 PLENUM CONDUCTOR CABLE

A. Plenum conductor cable may be used for NEC Class 2 or 3 wiring if conductor cable is UL listed in accordance with UL 910 and UL 1820 and is installed in accordance with the NEC and is acceptable to the Authority having jurisdiction. Insulation types, UL listing, and written acceptance by the local authority shall be submitted for review.

B. Installation of cables shall be installed in a neat and workmanship like manner. Cables shall be supported conforming to the requirements of the latest edition of National Electrical Code and Electronics Industries Association and Telecommunications Industries Association.

2.4 CONNECTORS & LUGS

A. See Specification 262730 “Taps, Splices & Terminations”

2.5 ADJUSTABLE FREQUENCY DRIVES (AFD/VFD)

A. Motor Conductors for voltages greater than 240v and length exceeding 45ft from AFD/VFD:

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1. Cable characteristics:

a. As recommended by AFD manufacturer and meet minimum requirements: UL standard 44, 1277, MSHA & TC-ER approved, 600-1000 volt rated, 90˚C, XLPE insulation with copper tape shield with symmetrical grounds. Wire gage sized per

NFPA 70-460.6(A).

b. Manufacturer:

1) LAPPUSA Olflex VFD Symmetrical

2) SAB Associated Wire Products (SAB North America)

3) Belden - Large VFD Symmetrical Design

4) Approved equal

2. Bending radius: Contractor shall provide means of maintaining motor conductor minimum bending radius throughout protective raceway, pull boxes and terminations.

2.6 MOTOR TERMINATIONS

A. Motor branch conductors larger than #10 AWG shall be connected to the factory motor leads with compression type connector. Field wiring and factory wiring shall be terminated with individuals crimp type, single indent terminal lugs. Crimp connections shall be sized fro the connecting wires, type and construction. Individual connections shall be joined through bolting with a combination of bolt, nut, flat and locking washer.

B. Conductive motor terminals shall be insulated and sealed with factory engineered motor connection kits. Connection kits shall be rated for voltage, insulation class and dielectric strength. Connection kits shall be rated for 90˚C continuous conductor operation. Motor connection kits shall be equal to type RVC or MCK as manufactured by Raychem Corporation or equal by 3M or approved equal.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Provide circuit wiring complete as shown as called for within Contract documents, and as hereinafter specified or required. The minimum size of wire for branch circuits shall be No. 12, except 120 volt circuits over 100 feet in length shall be No. 10; 120 volt circuits over 150 feet in length shall be No. 8. Wiring shall be increased in size if so demanded by wattage of load.

Conductors No. 10 and smaller shall be solid.

B. Voltage drop calculations shall be performed by the contractor. Conductors sized shall be increased where branch circuit calculations result in a voltage drop greater than 3%.

C. 600 volt wiring shall be color coded. Consistent phase identification of wires from service feeders to branch circuit wires shall be maintained as follows:

1. 120/208 volts - Normal - Phase A .................................. Black

2. 120/208 volts - Normal - Phase B .................................. Red

3. 120/208 volts - Normal - Phase C .................................. Blue

4. 120/208 volts - Neutral .................................................. White

5. 120/208 volt - Ground Wire ........................................... Green

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6. 277/480 volt - Phase A ................................................... Brown

7. 277/480 volt - Phase B ................................................... Orange

8. 277/480 volt - Phase C ................................................... Yellow

9. 277/480 volt - Neutral .................................................... Grey

D. Fire alarm wiring or cable color coding shall be RED or per manufacturer’s recommendation.

E. Labeling: Contractor shall identify each termination via a permanent printed type “Brady” wire marker as noted.

F. Do not pull wires into raceways until raceways are permanently in place, thoroughly clean, and termination points are not subject to damage. Usage of pulling lubricants shall be applied sparingly.

G. Do not use uninsulated wire conductors.

H. Provide excess free conductor end length at termination points, adequate to make up splices and terminations, permitting neatly training conductors, and in any case not less than:

1. No. 14 through 10 AWG - 8 inches

2. No. 8 or 6 AWG - 12 inches

3. Larger than No. 6 AWG - 18 inches

I. Support vertical cables as required by Code. Use lock type cable support bushings having internal wedges and retaining collars. Locate support points in readily accessible pull boxes sized to code requirements.

J. Control circuit wiring in cabinets, panels, pull boxes, etc., shall be tied, bundled and held with Thomas & Betts Nylon Self-Locking Ty-Raps, or approved equal.

K. Large equipment pull, junction or terminal boxes shall contain suitable racks to support, arrange, and retain wire and cable in an orderly manner.

L. Equipment conductors smaller than No. 4 AWG, in wireways, gutters, pull boxes, terminations, etc., shall be identified with wire markers. Designate panel and circuit number on each individual marker.

M. Feeder or equipment conductors No. 4 AWG or larger, shall be individually identified with metal, fiber or fireproof linen tags or with wrap around markers. Designate panel circuit number on each individual marker. In addition, designate use of each set of conductors on a common tag or on each individual conductor marker. Tagging shall include panel source and feeder size of equipment supply.

N. Switchboard and distribution panelboards with ratings greater than 10,000 RMS symmetrical amperes shall have supply cables braced in accordance with board manufacturer bracing requirements where such panels are approved for bracing.

1. Wrapping of cables: Wrap line cables together with nominal 3/8-inch nylon rope or rope having a minimum tensile strength of 2000 pounds at 6 inches and 12 inches from the line terminals with minimum of five non-spaced wraps.

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2. For electrical equipment that is not clearly marked as to whether or not cable bracing is required, contact the Manufacturer’s representative.

O. Where the single pole work is used on branch circuits, circuit wiring shall have a dedicated neutral conductor. Do not gang or share neutrals. The Contract documents are schematic and diagrammatic and indicate the general method of installing circuit wiring and the outlets which are to be supplied.

P. Lighting and convenience outlet circuiting are indicated on the Contract documents separately as single pole work for clarity; however, the Contractor shall provide a minimum of 20 percent spare future capacity in each raceway.

Q. All branch circuits shall have a dedicated neutral conductor. Sharing neutrals is not permitted.

R. The minimum sizes of wire on an installation shall be as follows:

Emergency and Exit Circuits ............................................... 10 AWG

Lighting and Power Circuits ................................................ 12 AWG

Signal Circuits - with common or individual leads ............. 14 AWG

Remote Control Leads ......................................................... As recommended by manufacturer

Low Voltage Light Control, Communication, .................... Twisted Pair, Shielded or as recommended by manufacturer

Data, and Fire Alarm Systems ............................................. Shielded or recommended by manufacturer

Fixtures ............................................................................... 14 AWG Min. SF-2 and as required by Underwriters Laboratories and National Electrical Code

S. Install in each empty interior conduit, one nylon measuring fish line for the future installation of wire or cables.

T. Great care shall be exercised in pulling wires into the conduits so as not to injure the insulation.

Only UL approved lubricants shall be used to assist in the pulling in of wires with an outer covering or braid.

U. Where switch boxes are used as the termination of the "home runs" in addition to the switch legs, not less than a two-gang box shall be used.

V. The size and general location of the various feeders or branch circuits are approximately shown.

However, the contractor shall determine and coordinate the exact location and routing at the site.

W. Seal around conduits penetrating fire-rated elements according to Division 7, Section "Through- Penetration Firestop Systems".

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X. Communications, sound, dimming, fire alarm, data and other low voltage wiring shall be of size by the manufacturer of the equipment being served and cable type as required by the National Electrical Code.

Y. Branch circuits to be connected as numbered within Contract documents. Prior to energizing, test cable and wire for continuity of circuitry, and also for short circuits. Correct malfunctions when detected.

Z. In every pull or splice box and all other places where wires and cables may not be readily identified by nameplate on the equipment to which they connect, each circuit shall be identified with a permanent identification tag securely fastened to the conductors.

END OF SECTION 260519

GROUNDING AND BONDING FOR

ELECTRICAL SYSTEMS

260526-1

PROPERTY OF THE UNITED STATES GOVERNMENT

FOR OFFICIAL USE ONLY

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SECTION 260526 – GROUNDING & BONDING FOR ELECTRICAL SYSTEMS

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Special Conditions, General Requirements and Division 1 Specification Sections, apply to this Section.

B. Related Sections:

1. Division 01 Section “Construction Waste Management and Disposal”.

1.2 QUALITY ASSURANCE

A. NFPA 70 - National Electrical Code

B. UL 467

C. Bare solid copper conductors ASTM B3.

D. Bare stranded copper conductors ASTM B8.

E. Underground distribution components IEEE C2.

1.3 PERFORMANCES

A. Conduit is not an allowable grounding means.

B. Continuous grounding conductor carried throughout the power system.

C. Grounding of voice, video and data systems.

D. Provide grounding of circuits, equipment, conduits and etc. as required by the NEC.

1.4 DESCRIPTION

A. Provide all system equipment and static grounding in accordance with the Contract Documents and in full compliance with the lasted edition of National Electrical Code, and the Authority having jurisdiction. Grounding requirements specified in this section may be supplemented by special requirements of systems described in other sections.

B. Ground every device and metal part of the electrical system including all enclosures, fixtures, boxes, feeders and branch circuits over 40 volts shall include a copper grounding conductor sized in accordance with NEC Table 250.122 except not smaller than #12 for power and lighting circuits and #14 for control circuits.

1. All equipment ground conductors shall have green colored insulation.

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2. Isolated ground conductors shall have green colored insulation with yellow stripe.

3. Feeders to have alternating, three (3) green and two (2) yellow bands of tape.

C. Maintain continuity of system and equipment grounds throughout the electrical installation unless specifically shown otherwise. Provide ground bushings and jumpers where normal metallic ground paths are interrupted or unreliable.

D. Grounding shall be accomplished by means required by NEC and generally outlined in the subsequent paragraphs.

E. Grounding shall be connected to the water feed service pipe such as water heater and piping systems likely to become energized. Install a separate equipment grounding conductor to each electric water heater or heat-tracing system complying with manufacturer’s installation specifications. Bond conductor to heater units, piping, connected equipment and relevant components.

F. All electrical equipment, cabinets, boxes, conduit, metal fixture poles and metal raceways shall be grounded in accordance with the NEC and as specified herein.

G. All connections to apparatus and conduits shall be made with an approved UL type of bolted or compression connector. Connectors shall be securely fastened to the equipment. All contact surfaces shall be thoroughly cleaned and bright before connections are made in order to insure a good metal-to-metal contact.

H. All underground ground cable splicing or connections shall be exothermic welded.

I. Tie all grounding systems together at their origins and as called for by the NEC or authority of jurisdiction.

J. A solid ground shall be provided for the complete conduit system, feeder neutrals, motor frameworks, transformer cases, neutral of 480 volt and 208 volt building services, heating equipment enclosures, telecommunications and other items as required.

1.5 GROUNDING SYSTEM

A. Grounding electrodes shall be installed and interconnected according to NEC Article 250.50.

1. Bond water supply piping system in accordance with NEC Article 250.52

2. Per NEC Article 250.52(A)(3), provide a concrete-encased foundation electrode and bond to other electrodes per NEC.

3. Provide building ground ring with connections to structural steel columns in accordance to NEC Article 250.52(A)(4) at locations as shown within Contract documents. Steel columns shall be connected to the grounding electrode system with bare stranded copper where shown on contract documents or required by NEC or Authority having jurisdiction. Size bonding conductor in accordance to NEC Article 250. Connections to steel columns shall be made above grade using exothermic connection within web of column.

B. Provide insulated copper grounding conductors in conduit for metal water service pipe from building’s main service equipment, or grounding bus, to main metal water service entrance.

Connect grounding conductors to main metal water service pipes by approved grounding connectors. Where a dielectric main water fitting is installed, connect grounding conductor to

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C. Where installed, vertical drops from the lightning protection loops shall be connected at points located on the lightning protection plan(s). Drops shall connect first to a driven ground rod outside building then to ground loop.

D. Individual grounding risers for power, data/communications, security, and fire alarm closets shall be of wire type and sized as required by manufacturer or as specified elsewhere in specifications. Telecommunication bus bar shall be provided by this contractor and installed per BICSI and EIA/TIA standards.

E. Where any ground conductor required protection from physical damage, route conductor through a non-ferrous conduit or a steel conduit that’s bonded at both ends.

A. Ground conductors shall be of size indicated or required by code.

B. Ground rods shall be copper-clad steel, 3/4 inch diameter and 10 feet long.

C. Connectors shall be as manufactured by Burndy, O.Z. Gedney, or Erico.

D. Exothermic welding shall be Erico, Burndy, or O.Z. Gedney.

E. Accessible connections shall be made with multiple bolt silicon bronze connectors specifically designed and approved for the connection to be made.

F. Lighting fixtures shall be grounded by the use of a manufacture-supplied ground lug or pigtail or by the use of manufacture approved ground connection.

3.1 INSTALLATION

A. The neutral wire for the electrical system shall not be used to ground miscellaneous conduits.

B. Ground wires required by the National Electrical Code shall be installed.

C. The resistance between the grounding system and absolute earth shall not exceed values as specified and shall be measured in the presence of the Owner’s representative.

D. The equipment grounding terminal bars of the normal and emergency electrical system panel boards shall be bonded together with an insulated continuous copper bonding jumper not smaller than No. 6 copper or otherwise shown within Contract documents.

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E. Steel columns shall be bonded per NEC requirements.

F. Electrically continuous metal raceway system shall not be used as the primary grounding or bonding conductor. A separate continuous grounding conductor shall be carried throughout the raceway system.

3.2 EQUIPMENT GROUNDING

A. Conduit system shall be electrically continuous. All locknuts shall cut through enameled or painted surfaces on enclosures. Where enclosures and non-current carrying metals are isolated from the conduit system, use bonding jumpers with approved clamps. Where reducing washers are used and where concentric or eccentric knockouts are not completely removed, bonding bushings shall be required. Conduit crossing building expansion joints shall have provision for maintaining ground continuity.

B. Cable shielding, metallic conduits, wireways, cable boxes, electrical equipment housings and all noncurrent carrying metallic parts shall be grounded. Run a separate ground wire to all equipment.

C. All conduit stub-ups shall be grounded and where multiple stub-ups are made within an equipment enclosure, such as a switchboard, conduits shall be equipped with grounding bushings and bonded together and to the enclosure ground bus.

D. Provide bonding devices, fittings or jumpers at expansion fitting, isolation sections or wherever continuity of ground is broken.

E. Install all grounding conductors with sufficient slack, to avoid breaking due to settlement or movement of conductors or attached points. Installation of bonding straps or jumpers shall be provided for vibration by equipment mounted on vibration isolation hangers and supports is not transmitted to rigidly mounted equipment. Bond straps directly to the basic structure taking care not to penetrate any adjacent parts. Install straps only in locations accessible for maintenance.

F. Motors shall be grounded by means of a grounding conductor located in the same raceway with the motor feeder connected to a grounding bushing at the motor terminal box and the ground bus from source of power or to the incoming conduit grounding bushing of an individually mounted motor starter.

G. Where flexible medal conduit is used for all or part of a conduit run, except lighting branch circuits, a grounding conductor shall be provided in the conduit and connected to grounding bushings at each end of the run.

H. Usage of steel core Liquid-Tight conduit shall have an exterior spiral wrapped green THHN bonding conductor terminating to external type grounding fittings using a minimum green #10 copper conductor.

I. Under no circumstances shall a neutral conductor or neutral bar in an enclosure be used for grounding purposes.

3.3 FEEDER GROUNDING

A. Run a separate insulated ground for feeders.

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B. Size grounds in accordance with the NEC or as noted within Contract documents whichever is more stringent.

3.4 FIELD QUALITY CONTROL

A. After installing grounding system but before permanent electrical circuitry has been energized, test for compliance with requirements.

B. Test completed grounding system at each location where a maximum ground-resistance level is specified, at service disconnect enclosure grounding terminal, and at ground test wells.

Measure ground resistance not less than two (2) full days after the last trace of precipitation, and without the soil being moistened by any means other than natural drainage or seepage and without chemical treatment or other artificial means of reducing natural ground resistance.

Perform tests, by the fall-of-potential method according to IEEE 8l.

C. Provide to Architect of record plan drawings locating each ground rod and ground rod and ground rod assembly and other grounding electrodes, identify each by letter in alphabetical order, and key to the record of tests and observations. Include the number of rods driven and their depth at each location and include observations of weather and other phenomena that may affect test results. Describe measures taken to improve test results.

1. Equipment Rated 500 kVA and Less: 10 ohms.

2. Equipment Rated 500 to 1000 kVA: 5 ohms.

3. Equipment Rated More Than 1000 kVA: 3 ohms.

4. Substations and Pad-Mounted Switching Equipment: 5 ohms

D. Excessive Ground Resistance: If resistance to ground exceeds specified values, suitable and approved methods to reduce ground resistance shall be provided by this contractor.

END OF SECTION 260526

HANGERS AND SUPPORTS FOR

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SECTION 260529 – HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Special Conditions, General Requirements and Division 1 Specification Sections, apply to this Section.

B. Related Sections:

1. Division 01 Section “Construction Waste Management and Disposal”.

2. Division 7, section “Spray Fire-resistive Material” for coordination of all hangers or applicable supports.

1.2 DESCRIPTION

A. Provide products to suspend, attach, support and otherwise retain in location, electrical work.

1. The specified requirements herein include support and hardware information of a general nature. Where additional requirements are stated elsewhere in the specification related to specific products and conditions, such additional requirements shall supersede these general specifications.

B. Approvals: Obtain approval before cutting, drilling, or welding to, structural members. Where cutting, drilling, or welding is permitted, this work, as required for product support, is a part of product installation electrical work.

C. Welding: Use certified welders for welded installation. Steel in weld area shall be cleaned before and after welding operations, and refinished after welding.

1. Do not weld raceway pipe straps to structure.

2. Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural Welding

Code - Steel."

1.3 COORDINATION

A. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified in Division 03.

B. Coordinate installation of roof curbs, equipment supports, and roof penetrations. These items are specified in Division 07 Section "Roof Accessories."

PART 2 - PRODUCTS

2.1 MATERIALS

A. Use expansion shield anchors or toggle bolts of the following manufacturers:

1. Phillips Drill Company, Inc. "Red Head Self Drilling"

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2. Rawl Products Company "Saber Tooth"

3. McCulloch Industries "Kwik Bolt"

B. Steel Slotted Support Systems: Comply with MFMA-4, factory-fabricated components for field assembly.

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Cooper B-Line, Inc.; a division of Cooper Industries.

b. Thomas & Betts Corporation.

c. Unistrut; Tyco International, Ltd.

2. Metallic Coatings: Hot-dip galvanized after fabrication and applied according to MFMA-4.

3. Nonmetallic Coatings: Manufacturer's standard PVC, polyurethane, or polyester coating applied according to MFMA-4.

4. Painted Coatings: Manufacturer's standard painted coating applied according to MFMA-4.

5. Channel Dimensions: Selected for applicable load criteria.

C. Raceway and Cable Supports: As described in NECA 1 and NECA 101.

D. Conduit and Cable Support Devices: Steel and malleable-iron hangers, clamps, and associated fittings, designed for types and sizes of raceway or cable to be supported.

E. Support for Conductors in Vertical Conduit: Factory-fabricated assembly consisting of threaded body and insulating wedging plug or plugs for non-armored electrical conductors or cables in riser conduits. Plugs shall have number, size, and shape of conductor gripping pieces as required to suit individual conductors or cables supported. Body shall be malleable iron.

F. Structural Steel for Fabricated Supports and Restraints: ASTM A 36/A 36M, steel plates, shapes, and bars; black and galvanized.

G. Mounting, Anchoring, and Attachment Components: Items for fastening electrical items or their supports to building surfaces include the following:

1. Mechanical-Expansion Anchors: Insert-wedge-type, zinc-coated steel, for use in hardened portland cement concrete with tension, shear, and pullout capacities appropriate for supported loads and building materials in which used.

a. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1) Cooper B-Line, Inc.

2) Empire Tool and Manufacturing Co., Inc.

3) Hilti Inc.

4) ITW Ramset/Red Head

5) MKT Fastening, LLC.

3. Mechanical Concrete Inserts: Steel or malleable-iron, slotted support system units similar to MSS Type 18; complying with MFMA-4 or MSS SP-58.

4. Clamps for Attachment to Steel Structural Elements: MSS SP-58, type suitable for attached structural element.

5. Through Bolts: Structural type, hex head, and high strength. Comply with ASTM A 325.

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6. Toggle Bolts: All-steel springhead type.

7. Hanger Rods: Threaded steel.

3.1 APPLICATION

A. Comply with NECA 1 and NECA 101 for application of hangers and supports for electrical equipment and systems except if requirements in this Section are stricter.

B. Maximum Support Spacing and Minimum Hanger Rod Size for Raceway: Space supports for EMT, IMC, and RMC as required by NFPA 70. Minimum rod size shall be 1/4 inch (6 mm) in diameter.

C. Multiple Raceways or Cables: Install trapeze-type supports fabricated with steel slotted support system, sized so capacity can be increased by at least 25 percent in future without exceeding specified design load limits.

D. Spring-steel clamps designed for supporting single conduits without bolts may be used for 1- 1/2-inch (38-mm) and smaller raceways serving branch circuits and communication systems above suspended ceilings and for fastening raceways to trapeze supports.

3.2 SUPPORT INSTALLATION

A. Comply with NECA 1 and NECA 101 for installation requirements except as specified in this Article.

B. Strength of Support Assemblies: Where not indicated, select sizes of components so strength will be adequate to carry present and future static loads within specified loading limits.

Minimum static design load used for strength determination shall be weight of supported components plus 200 lb (90 kg).

C. Mounting and Anchorage of Surface-Mounted Equipment and Components: Anchor and fasten electrical items and their supports to building structural elements by the following methods unless otherwise indicated by code:

1. To Wood: Fasten with lag screws or through bolts.

2. To New Concrete: Bolt to concrete inserts.

3. To Masonry: Approved toggle-type bolts on hollow masonry units and expansion anchor fasteners on solid masonry units.

4. To Existing Concrete: Expansion anchor fasteners.

5. Instead of expansion anchors, powder-actuated driven threaded studs provided with lock washers and nuts may be used in existing standard-weight concrete 4 inches (100 mm) thick or greater. Do not use for anchorage to lightweight-aggregate concrete or for slabs less than 4 inches (100 mm) thick.

6. To Steel: Beam clamps (MSS Type 19, 21, 23, 25, or 27) complying with MSS SP-69

7. To Light Steel: Sheet metal screws.

8. Items Mounted on Hollow Walls and Nonstructural Building Surfaces: Mount cabinets, panelboards, disconnect switches, control enclosures, pull and junction boxes, transformers, and other devices on slotted-channel racks attached to substrate.

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D. Drill holes for expansion anchors in concrete at locations and to depths that avoid reinforcing bars.

3.3 INSTALLATION OF FABRICATED METAL SUPPORTS

A. Comply with installation requirements in Division 05 Section "Metal Fabrications" for site-fabricated metal supports.

B. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation to support and anchor electrical materials and equipment.

C. Field Welding: Comply with AWS D1.1/D1.1M.

3.4 CONCRETE BASES

A. Construct concrete bases of dimensions indicated but not less than 4 inches (100 mm) larger in both directions than supported unit, and so anchors will be a minimum of 10 bolt diameters from edge of the base.

B. Use 3000-psi, 28-day compressive-strength concrete. Concrete materials, reinforcement, and placement requirements are specified in Division 03 Section "Cast-in-Place Concrete.”

C. Anchor equipment to concrete base.

1. Place and secure anchorage devices. Use supported equipment manufacturer's setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded.

2. Install anchor bolts to elevations required for proper attachment to supported equipment.

3. Install anchor bolts according to anchor-bolt manufacturer's written instructions.

3.5 PAINTING

A. Touchup: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately after erecting hangers and supports. Use same materials as used for shop painting. Comply with SSPC-PA 1 requirements for touching up field-painted surfaces.

1. Apply paint by brush or spray to provide minimum dry film thickness of 2.0 mils.

B. Touchup: Comply with requirements in Division 09 Section "High-Performance Coatings" for cleaning and touchup painting of field welds, bolted connections, and abraded areas of shop paint on miscellaneous metal.

C. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply galvanizing-repair paint to comply with ASTM A 780.

3.6 INSTALLATION

A. Provide common support trapezes for parallel raceways.

B. Use manufactured preformed U-Channel system having accessory connecting and clamping devices available where parallel raceways are to be supported. Load channel system not to exceed manufacturer's recommendation.

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C. Fabricate supports for transformers, panel boards, cable tray, lighting fixtures, cabinets, pull and junction loads, and similar electrical products from preformed U-Channel systems. Load on channel system not to exceed manufacturer's recommendations.

D. Support panelboards, disconnect switches, telecommunications, equipment, security, fire alarm panels, grounding bars and all other wall mount electrical equipment via ¾” primed and fire treated plywood. Electrical equipment shall be mounted on said plywood in computer, telecommunication or electric rooms unless noted otherwise.

E. Use preformed U-Channel concrete inserts preset into forms to secure hangers suspended from slabs.

F. Use concrete expansion shield anchors or preformed U-Channel cast-in-place concrete inserts for attaching electrical products to concrete walls.

G. Support loads from stud anchors or concrete inserts at not to exceed manufacturer's live loading recommendations.

H. Do not use powder-charge driven fasteners. This includes anchors which are driven into place by any device which produces and impact force by use of compressed air, gas or any other propellant.

I. Do not drill holes or install driven fasteners in concrete at less than 12 inches from prestressed steel.

J. Do not use nylon or similar concrete inserts without prior approval, except for supporting 1 inch or smaller individual runs of conduit or tubing.

K. Use toggle bolts to attach supports for electrical products to hollow masonry walls. Do not attach products weighing more than 50 pounds to hollow masonry walls, without prior approval.

END OF SECTION 260529

RACEWAYS AND BOXES FOR

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SECTION 260533 – RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Special Conditions, General Requirements, Division 1 Specifications, apply to this Section.

B. Related Sections:

1. Division 01 Section “Construction Waste Management and Disposal”.

1.2 DESCRIPTION

A. Provide concealed or surface mount raceway as required to complete work indicated on the Contract Documents. Installed raceways shall be plumb and level. Raceways and backboxes shall be provided for Technology, Fire Alarm, Security and Other Trades in non-residential spaces.

1. Raceways and backboxes shall be “RED” in color for all fire alarm related wiring.

2. Raceways and backboxes shall be “YELLOW” in color for all emergency circuits derived from emergency panelboards as noted within Contract documents.

B. All wiring shall be in conduit unless otherwise noted. Conduit shall be concealed in finished areas and may be exposed in unfinished areas such as mechanical and electrical areas. Conduit runs shall be continuous from outlet to outlet, fitting, pull or junction box, to cabinet or panel;

and shall be mechanically secured electrically continuous.

C. Minimum conduit size is 3/4”. Where required, maximum lengths of 3 feet of ½” flexible conduit may be used for connecting instruments, sensors or associated control components.

D. Provide outlet boxes in the raceway systems wherever required for pulling wires and cables, making connections, mounting devices, lighting fixtures, controls or connecting miscellaneous equipment. Boxes installed shall be level and flushed mounted within wall cavities/partitions for wall mount devices as noted on plans.

E. Certain backboxes for the fire alarm systems shall be supplied by the respective equipment suppliers. Any boxes required for the respective systems and not furnished by the respective equipment suppliers shall be furnished and installed. It is this Contractor's responsibility to determine what boxes are and are not furnished by the respective equipment suppliers.

F. EC to provide all backboxes for Mechanical, HVAC and Plumbing equipment power and/or control devices.

G. Provide plaster rings as required in gypsum board partitions.

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H. Coordinate box sizes with other equipment supplier as required.

I. All boxes associated with plastic conduits shall be PVC boxes with cast aluminum covers, complying with NEMA OS2.

J. Unless otherwise noted, backboxes for telecommunication, technology and security devices shall have extra deep capacity with a minimum size of 4”x4”.

1.3 GENERAL

A. Wherever the terms "conduit" or "raceway" appear hereinafter it shall be understood to mean any one, or combination of, the following type:

1. Rigid Metal Conduit / Intermediate Metal Conduit - RMC ANSI C80.1, IMC ANSI C

80.6

2. Electrical Metallic Tubing - ANSI C 80.3

3. Flexible Metallic Conduit

4. Square Steel Raceway Duct

5. Liquid Tight Flexible Conduit with External Wrap Ground Wire - UL 360

6. Surface Mounted Raceway

7. Metal Duct Wireway

8. Intermediate Steel Conduit

9.